
(function($) {
    $.fn.easySlider = function(options) {
        var defaults = {prevId: 'prevBtn', prevText: 'Previous', nextId: 'nextBtn', nextText: 'Next', controlsShow: true, controlsBefore: '', controlsAfter: '', controlsFade: true, firstId: 'firstBtn', firstText: 'First', firstShow: false, lastId: 'lastBtn', lastText: 'Last', lastShow: false, vertical: false, speed: 800, auto: false, pause: 2000, continuous: false, numeric: false, numericId: 'controls'};
        var options = $.extend(defaults, options);
        this.each(function() {
            var obj = $(this);
            var s = $("li", obj).length;
            var w = $("li", obj).width();
            var h = $("li", obj).height();
            var clickable = true;
            obj.width(w);
            obj.height(h);
            obj.css("overflow", "hidden");
            var ts = s - 1;
            var t = 0;
            $("ul", obj).css('width', s * w);
            if (options.continuous) {
                $("ul", obj).prepend($("ul li:last-child", obj).clone().css("margin-left", "-" + w + "px"));
                $("ul", obj).append($("ul li:nth-child(2)", obj).clone());
                $("ul", obj).css('width', (s + 1) * w);
            }
            ;
            if (!options.vertical)
                $("li", obj).css('float', 'left');
            if (options.controlsShow) {
                var html = options.controlsBefore;
                if (options.numeric) {
                    html += '<ol id="' + options.numericId + '"></ol>';
                } else {
                    if (options.firstShow)
                        html += '<span id="' + options.firstId + '"><a href=\"javascript:void(0);\">' + options.firstText + '</a></span>';
                    html += ' <span id="' + options.prevId + '"><a href=\"javascript:void(0);\">' + options.prevText + '</a></span>';
                    html += ' <span id="' + options.nextId + '"><a href=\"javascript:void(0);\">' + options.nextText + '</a></span>';
                    if (options.lastShow)
                        html += ' <span id="' + options.lastId + '"><a href=\"javascript:void(0);\">' + options.lastText + '</a></span>';
                }
                ;
                html += options.controlsAfter;
                $(obj).after(html);
            }
            ;
            if (options.numeric) {
                for (var i = 0; i < s; i++) {
                    $(document.createElement("li")).attr('id', options.numericId + (i + 1)).html('<a rel=' + i + ' href=\"javascript:void(0);\">' + (i + 1) + '</a>').appendTo($("#" + options.numericId)).click(function() {
                        animate($("a", $(this)).attr('rel'), true);
                    });
                }
                ;
            } else {
                $("a", "#" + options.nextId).click(function() {
                    animate("next", true);
                });
                $("a", "#" + options.prevId).click(function() {
                    animate("prev", true);
                });
                $("a", "#" + options.firstId).click(function() {
                    animate("first", true);
                });
                $("a", "#" + options.lastId).click(function() {
                    animate("last", true);
                });
            }
            ;
            function setCurrent(i) {
                i = parseInt(i) + 1;
                $("li", "#" + options.numericId).removeClass("current");
                $("li#" + options.numericId + i).addClass("current");
            }
            ;
            function adjust() {
                if (t > ts)
                    t = 0;
                if (t < 0)
                    t = ts;
                if (!options.vertical) {
                    $("ul", obj).css("margin-left", (t * w * -1));
                } else {
                    $("ul", obj).css("margin-left", (t * h * -1));
                }
                clickable = true;
                if (options.numeric)
                    setCurrent(t);
            }
            ;
            function animate(dir, clicked) {
                if (clickable) {
                    clickable = false;
                    var ot = t;
                    switch (dir) {
                        case"next":
                            t = (ot >= ts) ? (options.continuous ? t + 1 : ts) : t + 1;
                            break;
                        case"prev":
                            t = (t <= 0) ? (options.continuous ? t - 1 : 0) : t - 1;
                            break;
                        case"first":
                            t = 0;
                            break;
                        case"last":
                            t = ts;
                            break;
                        default:
                            t = dir;
                            break;
                    }
                    ;
                    var diff = Math.abs(ot - t);
                    var speed = diff * options.speed;
                    if (!options.vertical) {
                        p = (t * w * -1);
                        $("ul", obj).animate({marginLeft: p}, {queue: false, duration: speed, complete: adjust});
                    } else {
                        p = (t * h * -1);
                        $("ul", obj).animate({marginTop: p}, {queue: false, duration: speed, complete: adjust});
                    }
                    ;
                    if (!options.continuous && options.controlsFade) {
                        if (t == ts) {
                            $("a", "#" + options.nextId).hide();
                            $("a", "#" + options.lastId).hide();
                        } else {
                            $("a", "#" + options.nextId).show();
                            $("a", "#" + options.lastId).show();
                        }
                        ;
                        if (t == 0) {
                            $("a", "#" + options.prevId).hide();
                            $("a", "#" + options.firstId).hide();
                        } else {
                            $("a", "#" + options.prevId).show();
                            $("a", "#" + options.firstId).show();
                        }
                        ;
                    }
                    ;
                    if (clicked)
                        clearTimeout(timeout);
                    if (options.auto && dir == "next" && !clicked) {
                        ;
                        timeout = setTimeout(function() {
                            animate("next", false);
                        }, diff * options.speed + options.pause);
                    }
                    ;
                }
                ;
            }
            ;
            var timeout;
            if (options.auto) {
                ;
                timeout = setTimeout(function() {
                    animate("next", false);
                }, options.pause);
            }
            ;
            if (options.numeric)
                setCurrent(0);
            if (!options.continuous && options.controlsFade) {
                $("a", "#" + options.prevId).hide();
                $("a", "#" + options.firstId).hide();
            }
            ;
        });
    };
})(jQuery);